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@@ -19,9 +19,10 @@ uint32_t pwmDmaCap0[10]={0};
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uint32_t pwmDmaCap4[10]={0};
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static luat_pwm_conf_t pwm_confs[5];
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+static uint8_t dmaCh;
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int l_pwm_dma_capture(lua_State *L, void* ptr) {
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- int pwmH,pwmL,pulse;
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+ int pwmH = 0,pwmL = 0,pulse = 0;
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// 给 sys.publish方法发送数据
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rtos_msg_t* msg = (rtos_msg_t*)lua_topointer(L, -1);
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int channel = msg->arg1;
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@@ -52,7 +53,8 @@ static void pwm_dma_callback(void * channel)
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{
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u8 ch = (u8)(channel);
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tls_pwm_stop(ch);
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- tls_dma_free(1);
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+ tls_dma_free(dmaCh);
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+ dmaCh = 0;
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rtos_msg_t msg={0};
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msg.handler = l_pwm_dma_capture;
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msg.arg1 = ch;
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@@ -206,10 +208,13 @@ int luat_pwm_setup(luat_pwm_conf_t* conf) {
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}
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int luat_pwm_capture(int channel,int freq) {
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- uint8_t dmaCh;
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struct tls_dma_descriptor DmaDesc;
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tls_sys_clk sysclk;
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tls_sys_clk_get(&sysclk);
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+ if (dmaCh) {
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+ tls_dma_free(dmaCh);
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+ dmaCh = 0;
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+ }
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switch (channel){
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// #ifdef AIR101
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// case 0:
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Wendal Chen